nasa says not unless the u.s. is ready to pay up. ainsley earhart has more. >> they're basically telling you to get on your knees and start praying. these killer asteroids are usually only seen in the movies, right? but last month's russia's close call with a meteor got people a little worried. yesterday nasa officials told congress they have only detected about 10% of meteors like that one which could wipe out an entire city. and while funding to track space threats has grown, nasa needs to spend billions in the next few years to expand the program, they say. officials say right now, the country doesn't have a defense. >> if you detected even a small one like the one that detonated in russia, head for new york city in three weeks what, we would do? >> if it's coming in three weeks, pray. >> the bottom line is always, the funding did not come. >> pretty scary. nasa is planning to build a sensor and laser system to hut down asteroids, but it will cost billions of dollars. but they say sequesterration cuts are threatening the plans. so